DR. CHRISTINA M WALKER PSY.D.
NPI 1326223587
Psychologist in Corte Madera, CA

Active since January 07, 2008Opted out of Medicare · through Apr 1, 2028
45 SAN CLEMENTE DR STE B230, CORTE MADERA, CA 94925(415) 886-7062 Get Directions Write a Review

NPPES record last updated: April 17, 2018. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Christina M Walker Psy.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHRISTINA M WALKER PSY.D. (NPI 1326223587) is an individual psychologist in Corte Madera, California, licensed in California (PSY22470) and active in the NPI registry since January 2008. She has opted out of Medicare through April 1, 2028.

NPPES Registry Identity

NPI1326223587
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. CHRISTINA M WALKERCredential: PSY.D.
Location Address45 SAN CLEMENTE DR STE B230Corte Madera, CA 94925-1299
Mailing Address45 San Clemente Dr Ste B230Corte Madera, CA 94925-1299 · (415) 886-7062
Sole ProprietorYes
Enumeration DateJanuary 7, 2008
Last NPPES UpdateApril 17, 2018
NPI 1326223587 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in CA · PSY22470
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License PSB33236 (CA)
45 SAN CLEMENTE DR STE B230, Corte Madera, CA 94925

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Dr. Christina M Walker Psy.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 1, 2016 through April 1, 2028.

Opt-Out Effective DateApril 1, 2016
Opt-Out In Effect ThroughApril 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Christina Walker's NPI number?

The NPI number for Christina Walker is 1326223587. It was assigned to this individual provider in the NPPES registry on January 7, 2008.

Where is Christina Walker located?

Christina Walker practices at 45 San Clemente Dr Ste B230, Corte Madera, CA 94925. The listed phone number is (415) 886-7062.

What is Christina Walker's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Christina Walker enrolled in Medicare?

No. Christina Walker has opted out of Medicare through April 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Christina Walker was last updated on April 17, 2018. NPI Profile syncs with the weekly NPPES data releases published by CMS.